- Mon Mar 14, 2016 1:45 pm
#43126
User
Samsungite
Description
I think that one day, all food cupboards & fridges/freezers will be smart. All products will have an RFID or video recognisable label which will update a list of product usage. Your local supermarket will gather this information & replenish your products as required - who knows ??
I can now check how much milk I have on my smart phone while out shopping !!
I use a load cell connected to an Arduino which displays the quantity of milk on an oled display and transmits the same information via wifi (ESP8266) to the web (Thingspeak).
The information is updated each time the fridge door is opened - I use a magnet and a reed switch to facilitate this.
Circuit
There are very few connections - they are listed in the code !
// oled SDA #A4
// oled SDC #A5 NOTE Supply is 3.3v
// HX711.DOUT - pin #A1
// HX711.PD_SCK - pin #A0 NOTE Supply is 5v
//ESP8266 TX/RX to arduino RX/TX
// Reed switch connected to interrupt on D2 normally Gnd - goes high when fridge door opened
Parts
Arduino Nano
ESP8266
128X64 OLED LCD LED Display
10Kg Load cell + HX711
9v PSU
Links
Instructables
Video
Images
Samsungite
Description
I think that one day, all food cupboards & fridges/freezers will be smart. All products will have an RFID or video recognisable label which will update a list of product usage. Your local supermarket will gather this information & replenish your products as required - who knows ??
I can now check how much milk I have on my smart phone while out shopping !!
I use a load cell connected to an Arduino which displays the quantity of milk on an oled display and transmits the same information via wifi (ESP8266) to the web (Thingspeak).
The information is updated each time the fridge door is opened - I use a magnet and a reed switch to facilitate this.
Circuit
There are very few connections - they are listed in the code !
// oled SDA #A4
// oled SDC #A5 NOTE Supply is 3.3v
// HX711.DOUT - pin #A1
// HX711.PD_SCK - pin #A0 NOTE Supply is 5v
//ESP8266 TX/RX to arduino RX/TX
// Reed switch connected to interrupt on D2 normally Gnd - goes high when fridge door opened
Parts
Arduino Nano
ESP8266
128X64 OLED LCD LED Display
10Kg Load cell + HX711
9v PSU
Links
Instructables
Video
Images
Surplus parts
https://epartsconnect.com
Live realtime stock market prediction website. https://www.stocksignalslive.com my latest creation. Uses AI and machine learning.
New site featuring ESP8266 and ESP32 projects. tutorials, and news.
http://EverythingESP.com
ESP8266.com Founder and Administrator
The Mind Factory (get more from your 3D printer)
Home of the ESP8266, ESP8285, and ESP32 microcontrollers....
https://epartsconnect.com
Live realtime stock market prediction website. https://www.stocksignalslive.com my latest creation. Uses AI and machine learning.
New site featuring ESP8266 and ESP32 projects. tutorials, and news.
http://EverythingESP.com
ESP8266.com Founder and Administrator
The Mind Factory (get more from your 3D printer)
Home of the ESP8266, ESP8285, and ESP32 microcontrollers....
